Segment Information - Geographic Segment Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	$ 2,076	$ 2,002	$ 2,035
Long-Lived Assets (excluding financial instruments and deferred tax assets)	2,609	2,715	2,910
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	772	795	873
Long-Lived Assets (excluding financial instruments and deferred tax assets)	1,478	1,630	1,753
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	162	155	152
Long-Lived Assets (excluding financial instruments and deferred tax assets)	39	31	42
All Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	1,142	1,052	1,010
Long-Lived Assets (excluding financial instruments and deferred tax assets)	$ 1,092	$ 1,054	$ 1,115